SDR ASAA2021100636206

Service difficulty report · Spacer · Boeing 737990ER

Difficulty date: October 6, 2021
Submitted: October 7, 2021
Operation: Air carrier
Aircraft: N433AS
Make and model: Boeing 737990ER
Aircraft serial: 41704
Aircraft time: 29,807 hours, 9,483 cycles
Engine: Cfmint CFM567B27E
System (JASC): 7220 · Turbine Engine Air Inlet Section
Part: Spacer
Part number: 3400012620
Condition: None
Location: #1 Engine
Stage of operation: IN
How discovered: O
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

WHILE PERFORMING TC 78472010 CFM56-7 FAN BLADE LUBRICATION FOUND ELASTOMER DISBONDING FROM SPACERS 1,2,3,4,5,6,7,8,10,12,13,14,15,16,17,18,19,20,22,23,AND 24. GROUNDED - YES. REMOVED & REPLACED SPACERS 1,2,3,4,5,6,7,8,10,12,13,14,15,16,17,18,19,20,22,23,&24 PER TC 78472010.